<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">

    <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询（media queries）功能 -->
    <!-- 警告：通过 file:// 协议（就是直接将 html 页面拖拽到浏览器中）访问页面时 Respond.js 不起作用 -->
    <!--[if lt IE 9]>
      <script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.min.js"></script>
      <script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->
  </head>
  <body>
  	<style>
  		
  	</style>
  	<div class="container ">
  		<!--has-feedback ：添加图标
  			颜色：has-success  has-warning  has-error 
  		-->
	  	<div class="form-group has-error has-feedback">
	  		<label for="" class="control-label">input with success</label>
	  		<input type="text" class="form-control" />
	  		<!--图标样式 ：  后面加span标签：form-control-feedback -->
	  		<!--图标样式： glyphicon glyphicon-ok   glyphicon-wraning-sign  glyphicon-remove -->
	  		<span class="form-control-feedback glyphicon glyphicon-ok"></span>
	  	</div>
	  	<div class="form-group has-success has-feedback">
		  <label class="control-label" for="inputSuccess2">Input with success</label>
		  <input type="text" class="form-control" id="inputSuccess2" aria-describedby="inputSuccess2Status">
		  <span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
		  <span id="inputSuccess2Status" class="sr-only">(success)</span>
		</div>
		
		<div class="form-group has-feedback has-success">
			<label for="" class="control-label">input group with success</label>
			<div class="input-group">
				<span class="input-group-addon">@</span>
	  			<input type="text" class="form-control"  aria-describedby="input"/>
	
			</div>
			<span class="glyphicon glyphicon-warning-sign form-control-feedback" aria-hidden="true"></span>
		</div>
		<!--input和select 大小 ： input-lg  input-sm-->
		<input type="text" class="form-control input-lg" />
		<select name="" class="form-control input-sm">
			<option value=""></option>
		</select>
		<!--表单组的尺寸  form-group-lg  -->
		 <form action="" class="form-horizontal">
		 	<div class="form-group form-group-lg">
		 		<label for="" class="col-md-2 control-label">label</label>
		 		<div class="col-md-10">
		 			<input type="text" class="form-control"/>
		 		</div>
		 	</div>
		 </form>
		 
	</div>

    <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery，所以必须放在前边) -->
    <script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
    <!-- 加载 Bootstrap 的所有 JavaScript 插件。你也可以根据需要只加载单个插件。 -->
    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  </body>
</html>